Secreted protein acidic and rich in cysteine (SPARC) induces epithelial-mesenchymal transition, enhancing migration and invasion, and is associated with high Gleason score in prostate cancer.

López-Moncada F, Torres MJ, Castellón EA, Contreras HR.

Keywords: SPARC, PROSTATE CANCER, EPITHELIAL MESENCHYMAL TRANSITION

Abstract

Secreted protein acidic and rich in cysteine (SPARC) is a matricellular protein highly expressed in bone tissue that acts as a chemoattractant factor promoting the arrival of prostate cancer (PCa) cells to the bone marrow. However, the contribution of SPARC during the early stages of tumor progression remains unclear. In this study, we show that SPARC is highly expressed in PCa tissues with a higher Gleason score. Through stable knockdown and overexpression of SPARC in PC3 and LNCaP cells, respectively, here we demonstrate that endogenous SPARC induces the epithelial-mesenchymal transition (EMT), decreasing E-cadherin and cytokeratin 18 and increasing N-cadherin and vimentin. Moreover, SPARC induces the expression of EMT regulatory transcription factors Snail family transcriptional repressor 1 (Snail), Snail family transcriptional repressor 2 (Slug), and zinc finger E-box binding homeobox 1 (Zeb1). In addition, SPARC knockdown in PC3 cells decreases migration and invasion in vitro, without modifying cell proliferation. Our results indicate that SPARC might facilitate tumor progression by modifying the cellular phenotype in cancer cells.

Más información

Título de la Revista: ASIAN JOURNAL OF ANDROLOGY
Volumen: 21
Editorial: WOLTERS KLUWER MEDKNOW PUBLICATIONS
Fecha de publicación: 2019
Página de inicio: 557
Página final: 564
Idioma: Inglés
Financiamiento/Sponsor: FONDECYT 1151214; 1140417
URL: https://pubmed.ncbi.nlm.nih.gov/31031331/
DOI:

doi: 10.4103/aja.aja_23_19.

Notas: ISI, SCOPUS